Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
2. With the scan tool, verify that the Coolant Bypass Valve is commanded on.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
CHECK THE (K501) COOLANT BYPASS VALVE CONTROL CIRCUIT FOR A SHORT TO GROUND
1. Turn the ignition off.
2. Disconnect the Coolant Bypass Valve harness connector.
3. Disconnect the PCM C1 harness connector.
4. Check for continuity between ground and the (K501) Coolant Bypass Valve Control circuit at the Coolant Valve Bypass Valve harness connector.
  Is there continuity between ground and the (K501) Coolant Bypass Valve Control circuit?
  
  Yes
  - Repair the (K501) Coolant Bypass Valve Control circuit for a short to ground.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 3
CHECK FOR THE (K501) COOLANT BYPASS VALVE CONTROL CIRCUIT SHORTED TO THE (Z903) GROUND CIRCUIT
1. Check for continuity between the (K501) Coolant Bypass Valve Control circuit at the Coolant Valve Bypass Valve harness connector.
  Is there continuity between the (K501) Coolant Bypass Valve Control circuit and the (Z903) Ground circuit?
  
  Yes
  - Repair the short between the (K501) Coolant Bypass Valve Control circuit and the (Z903) Ground circuit.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
COOLANT BYPASS VALVE
1. Reconnect the PCM C1 harness connector.
2. Turn the ignition on.
  Is the P2861-ENGINE COOLANT BYPASS VALVE CONTROL CIRCUIT OPEN DTC active or pending with the Coolant Valve Bypass Valve harness connector unplugged?
  
  Yes
  - Replace the Coolant Bypass Valve in accordance with the Service Information. After the Coolant Bypass Valve is replaced, navigate to Misc Functions, and select the Coolant Bypass Valve Replaced selection to clear the Coolant Bypass Valve actuation counter.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK RELATED PCM AND COMPONENT CONNECTIONS
1. Perform any Service Bulletins that apply.
2. Disconnect all PCM harness connectors.
3. Disconnect all related in-line harness connections (if equipped).
4. Disconnect the related component harness connectors.
5. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
6. Reconnect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
7. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
9. With the scan tool, erase DTCs.
10. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
11. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace the Powertrain Control Module in accordance with the Service information. Refer to MODULE, POWERTRAIN CONTROL, REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  - Test complete.